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一、看作物备春耕根据农作物吸肥特点选择适合的肥料品种,既能充分发挥肥效,又能降低生产成本并获得高产。1、看作物选氮肥玉米、小麦等禾谷类作物施用铵态氮(如碳酸氢铵、硫酸铵、氯化铵、尿素)或硝态氮肥(如硝酸铵)。马铃薯、甘薯宜用铵态氮肥。此外,不同作物对氮素的要求不同,叶菜类蔬菜以叶片为收获对象的作物需较多的氮肥,而豆科作物只需在生育初期,根瘤尚未起作用时,施用少量氮肥。
First, as a preparation for spring According to the characteristics of crops to absorb fertilizer choose suitable fertilizer varieties, both to give full play to fertilizer, but also reduce production costs and obtain high yield. 1, as a selected nitrogen fertilizer Corn, wheat and other cereal crops using ammonium nitrogen (such as ammonium bicarbonate, ammonium sulfate, ammonium chloride, urea) or nitrate nitrogen fertilizer (such as ammonium nitrate). Potato, sweet potato should use ammonium nitrogen fertilizer. In addition, different crops have different requirements for nitrogen, and leafy vegetables require more nitrogenous fertilizer for crops harvested, while leguminous crops need only apply a small amount of nitrogen fertilizer in the early stages of growth and nodules have not played a role.